close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2410735

код для вставки
Nov. 5, 1946.
D. B. HolslNGToN
2,410,735
SIGNAL TRANSLATING SYSTEM
Filed‘Aug. 15, 1944
2 sheets-sheet 1
Y NOV» 5, 1946.
D. B. HolslNG-roN
` -
2,410,735
S IGNAL TRANSLATI NG SYS TEM
Filed Aug. 15, 1944
ì 2 sheets-sheet 2
=~-|
w
Ó
LL
-0-
o
SHOA
l
~
» '
SJIOA
,SHOA
SHQA
l
u
~
n
' SHOA
INVENTOR
DAVID B. HOISINGTON
BY
A
w27@
ORNEY
-2,410,735-
Patented Nov. 5, 1946
UNITED _STATES " PATENT „op-FICE
' " Davia B. noisington, Lime Neck, N. Y., assigner,
by mesne assignments, to Hazeltine Research,
Inc., Chicago-Ill., a. corporation of Illinois
"
` Appncafipn August 15, 1944, semi »10.549,615
11 claims.
(o1.z5o-27)_
'
'
This invention relates, in general, to a signal- >
translating `sy’stern'vfor` translating a signal which
amplitude level.
may include bidirectional amplitude variations
with respect to a reference amplitude level.' More
speciñcally, the invention pertains to a system
for translating such a signal to derive therefrom ,
an output signal having amplitude variations
which are determined by the variations of the
appliedA signal but which are unidirectional with
respect to a reference amplitude level correspond
ing to the reference level of the applied signal.
A familiar example of a signal having “bidi
2
amplitude variations with respect to a reference ‘
-
It is a specific object ofv the invention to pro
vide an improved signal-translating system -for
translating a signal which may include'bidirec
tional amplitude variations with respect to a
reference amplitude level to derive therefrom a
signal having amplitude variations which are de
termined by the variations ofA the applied signal
10 but which are unidirectional with respect to a
' reference amplitude level corresponding'to the
reference level of the applied signal.
.
rectional amplitude variations with respect to a
In accordance with the invention, a signal
translating system for translating a signal which
rent signal which, by definition, has alternate 15 mayinclude bidirectional amplitude variations
amplitude variations of positive and negative po
with respect to a reference amplitude level com
larity with respect to an alternating current axis,
prises av first repeater device. This ñr'st device
reference amplitude level” is an alternating cur
or a, zero reference amplitude level. When such.,A
is responsive to amplitude variations of the ap
plied signal in a given direction from its -refer
tem, the output signal obtained therefrom has 20 ence level and is substantially less responsive to
“amplitude variations which are determined by
amplitude variations of the applied signal in the
the variations of the applied alternatingcurrent
opposite direction from the reference level. The
signal but which are unidirectional with respect
system also comprises a second repeater device
a signal is applied to a full-wave rectifying sys- .
toa reference amplitude level corresponding to >
responsive to bidirectional amplitude variations
the reference level of the applied signal.” In the 25 of the applied signal from its reference level.
usual case, the'output signal likewise has a ref
Input and output circuits are provided for the
erence level of zero amplitude and its amplitude
repeater devices, including an impedance com
variations are either of positive or negative po.-y
mon to the output circuit oi.’ the ñrst device and
la'rity. Thus, it will be seen that such a full I , to the input circuit of the second device so that
,Wave rectifying system constitutes a signal-transl 30 signal variations in the ñrst device tend to eiîect
lating system of the 'type to which the present
invention is directed. However, in applying the
signal to be translated to the arrangements ofv
the prior art, a driver stage comprising a Vacu
um tube having a balanced output circuit is fre
quently employed. The balanced output circuit
materially reduces the gain of the driver stage
opposing signal variations in the second device.
‘The system includes means for -applying the
signal with a given phase and intensity to the _
input circuit of the first device and means for
35 applying the .signal with the same phase but
with substantially less than the aforesaid given
intensity to the input circuit of the second de
vice. Additionally, the system has means, cou
desirable operating limitation.
pled to the output circuitl of the second device,
While the invention is subject to a variety of l 40 forderiving an output signal from the system
having amplitude variations which are deter
applications, it is especially suited for use in a.
mined by the variations of the applied signal but
pulse-modulated wave-signal receiver of the type
which are unidirectional with respect toa refer
disclosed in applicant’s copending application
Serial No. 549,616, iiled concurrently herewith, 45 ence amplitude level corresponding to the refer
ence level of~ the applied signal.
‘
and will be particularly described in that con
For a better understanding of the present in
nection. The copendingapplicatio'n is'assigned
vention, together withother-and further> objects 1
to the- same assignee as the present invention.
thereof, reference is had to the following de
It is an object of the invention to provide an
taken in connection with- the accom
improved signal-translating system which sub 50 scription
panying drawings, and its scope will be pointed
stantially avoids the above-mentioned limitation
out in the appended claims.
’
,
of prior art arrangements.
Referring to the drawings, Fig. 1 is a sche
lIt is another object of the invention to provide
matic representation of a pulse-modulated signal
' which, for many installations, may bean un
an improved signal-translatingY system for trans
receiver embodying the present invention; Fig. 2
lating a signal which may include> bidirectional 5 comprises curves representing an operating char
2,410,735
4 . ,
acteristic of a signal-translating system in ac
cordance with the invention; while Figs. 3 and 4
individually comprise graphs utilized in explain- '
ing the operation of the Fig. l arrangement un
der different operating conditions.
operating biases on the control electrodes _of ythe I
sections of tube 61 that applied strong signal var
ia’tlons of negative polarity are limited by way of
l anode current cutoff in section 61A, while applied
strong signal variations of positive polarity are
Referring now more particularly to Fig. l of the
drawings, the pulse-modulated wave-signal re
ceive? there represented substantially -identical .ì
t0 that of Fig. lof the above-identified copend
similarly limited in section 61B. The output cir
cuit of section 61B is coupled to the input circuit
of a rectfying means 15, described more particu
larly'hereinafter. Rectiñer 15 is included in the
thereof- are designated by the same reference nu
second signal-translating means to derive the de
sired modulation ycomponents from the hetero
rier-frequency wave signals. Accordingly, the re
means is provided by a cathode follower, includ- ,
ing application and corresponding components
dyne-component pulse-modulated signal obtained
merals. The representations differ in that the in
from detector I5 in the presence of a received
stant Fig. 1 discloses the schematic circuit dia
pulse-modulated signal and a strong interfering
gram of only that portion of the receiver arrange
continuous-wave signal of different frequency
ment necessary to a complete understanding of
than
the carrier frequency of the pulse-modulated
the present invention,v the remainder of the repre
signal.
'
'
sentation being in the form of a block diagram.
The receiver of Fig. 1 further includes means,
The arrangement oi.' Fig. l may be considered as
coupled to the signal-translating means comprised
constitutingrthe receiver portion of a direction
[of
units 50, 65 and 15,»for supplying the desired
20
ñnder system in which direction finding informa
modulation components to a utilizing device. . This
-tion is translated by way of pulse-modulated car
ing a pentode-type tube 90, coupled to theoutput
ceiver. is adapted to derive desired modulation
components _of »a received 'pulse-modulated carrier
‘ circuit of rectifying means 15 'through a coupling
condenser 9|. The desired modulation compo
nents> of the received pulse-modulated signal are
frequency wave signal for application to a utiliz-l . ing‘device but is also subject to-receive concur
~ derived across a cathode impedance!!! of the
rently therewith an interfering wave signal of
` diiferent‘frequency .than the carrier frequency
' ‘
cathode follower and are supplied to an output
terminal 93 to which a suitable' utilizing .device
of the received pulse-modulated signal. As `illus
(not shown) may be connected. "The input circuit
30
trated, the receiver comprises an antenna systemof cathode follower 90 is such as 'totranslate only
`lll,«l~l'_for- interceptìng pulse-modulated carrier
the desired modulation components to output ter
frequency‘wave signals and for applying such
minal 93..
.
signals to- a ñrst signal-translating means cou
The description of the receiver to-this point has
pled to the antenna system..
The iirstsignal-translating means comprises. a 35 -been brief in view of thercomplete -disclosure to
` be found in applicant’s copending application'.
radio-frequency amplifier l2 of one or more stages
Returning lnow to the conslderationof unit 15,
to which `are coupled, in cascade, anl oscillator
embodying the present invention, this unit com
modulator I3, I andntermediate-frequency ampli
prises a signal-translating system for translating
ñer- i4 of> one or more stages, and a detector l5.
a signal which may include bidirectional ampli
40
The selector circuits includedY in the several com
tude variations with respect to a referenceampli
ponents of the described signal-translating means
tude level. The system is provided by a pair of
are such as efficiently to translate both the re
electron-discharge repeater devices, illustrated as
, ceived pulse-modulated direction-finder wave sig
discrete sections of a duo-triode 16, individually
nal and an iDterIeIingcontìnuOuS-wave signal to
the input circuit of detector l5. The detector l5 ' having anode, cathode and control electrodes.
> An input circuit is coupled to the cathode and
of the described signal-translating means com
control
electrodes of each device ,and an output
prises means effective in the absence of an inter
circuit is coupled to the anode and cathode elec
fering lwave signal to derive the desired modu
trodes of each device. These circuits include a
lation components of a received pulse-modulated
cathode impedance, series-connected resistors 18
wave signal and effective-in the presence of an
and 19, which is common to the output circuit
interfering wave signal of high intensity to derive
' of the ñrst device 16A and to the input circuit
from the received signals a heterodyne-compo
of the second device 16B so that signal variations
nent pulse-modulated signal having modulation
inthe ñrst device tend to effect .opposing signal
co'mponents corresponding to the desired compo
nents of the received pulse-modulated signal.
_
The receiver also> comprises a ‘second signal
translating means coupled to detector l5 and in
cluding selector circuits for translating efiiciently
the desired modulation components as well as the
heterodyne-component pulse-modulated signal
55 variations in the second device. For the particu
lar repeater circuit illustrated, the cathode im
pedance will -be seen to .be common to'both the
input and output circuits of each repeater.
The first repeater device 16A is controlled
60 through a. biasing circuit to be responsive to am
plitude variations of an applied signal in a given
direction from a reference amplitude level and
to be substantially less responsive, but preferably
unresponsive, to amplitude variations of the ap
plied signal in the opposite direction from its
reference level. The biasing circuit includes a,
is coupled through a condenser 6G to a limiter 65.
stabilizing 'diode 11 coupled to the output circuit
Limiter 55 includes a duo-triode 61 having a
of device 16A through a coupling condenser 94 and
iirst section 61A and a second section 61B which
having a load resistor _95. The diode circuit peak
are cathode-coupled through a common cathode
' resistor 68. The anode electrodes of each section 70 rectiiies the signal output of device 16A,Y estab
lishing across resistor 95 a potential of negative
of tube 61 connect with a source of space current,
polarity which is applied through resistors> 96 and
indicated +B, and a bleeder network of resistors
91 to the control electrode of section 16A. The
B9, 10 and Tl establishes positive potentials on
circuit is so arranged that the net bias applied to
the control electrodes of each section. Resistors
(iB-1I, inclusive, `are proportioned to establish such r the device, including that developed by the diode
- derived in the output circuit of the detector under
various operating conditions. This second signal
translating means includes an amplifier 50, having
an input circuit coupled to the output circuit of
detector' l5 andhaving an output circuit which
s - 2,410,735
av level indicated by horizontal'line c. Hence, as
derived in the output circuit of the limiter, the
detected »modulation components have the wave
11 and that produced bthode resistors 18 and
19, is such as to stabilize the signal input to sec
tion 16A at a level which operates section 16A f
substantially at anode current cutoñ for a signal
form of' full-line curve d. It will be seenv that
input having an amplitude level corresponding to
the translated signal appears in the output cir
the above-mentioned reference level. With this
arrangement device 16A is effective to repeat sub
ing only amplitude variations of- negative polar
stantially only to amplitude variations of positive
ity from a reference amplitude level e1.
polarity with respect to the aforementioned ref
erence level of an applied signal.
.
cuit of limiter B5 asa unidirectional signal hav
This signal is applied with a given phase and
1'0l full intensity to the input circuit of first repeat
The second repeater device 16B is responsive to
-bidirectional amplitude variations, or variations .
of positive and negative polarity, of the applied '
signal with respect to the reference amplitude
level. This is >accomplished by applying a bias
potential developed across resistor 18 between the -
er device 16A.
Sincethis device i's stabilized to-
operate atv substantially anode current cutoff, it
is unresponsive to negative-polarity amplitude
variations of an applied signal and hence does
not respond to the applied signal from' limiter
55. However, this signal output of the limiter is
cathode and control electrodes of- this device of
simultaneously applied with the same phase but
a condenser Sil, for applying the signal output of
signal of either positive or negative polarity,
less than half intensity to the input circuit of
such magnitude that the device is operated sub- ‘
secondrepeater device 16B. This device, being
stantially above anode current cutoff.
_
The system further includes means, comprising 20 responsive to amplitude variations of an applied
functions ina manner analogous to a conven
section 61B of limiter 65 with a given phase vand
_ tional amplifier and translates the applied signal
given intensity to the input circuit of nrst re
peeter- devic'e 16A. Likewise, the system has> \ to its output circuit. Cathode resistors 18 and 1S y
meansrfor -applying the same signal output of 25 produce a substantial degenerative eiîect" during
this amplification, reducing the gain of repeater
-limiter 55 with like phase but> With substantially
device 16A for applied amplitude variations of
less than the aforesaid Ygiven intensity to the input
circuit> of the second repeater device 16B. This
negative polarity. There results in the output
`anode resistor12 of limiter section- 61B. Prefera
plitude variations determined by the amplitude
' circuit of Iunit 15 a signal having the wave form
V ~meansis provided by a coupling condenser 8| ar
' ranged in circuitwith _an adjustable tap on the 30 of' curve h. This 'signal hasl unidirectional am
bly. the tap is so adjusted that the output signal '
variations of the appliedsig'n’al but of v a'positive
of the limiter` as applied to the second repeater
polarity with respect to a reference amplitude
Finally, the signal-translating system includes
curve h, representing the desired modulation
level e2 corresponding to the reference levelA c1
~ 16B has less than half the intensity of the signal
-35 -of the applied signal. It is this signal output of
as applied to the first repeater 16A.
,
means, a connection 82 to the anode electrode of
second'repeater 16B, for deriving an output signal
from the system having amplitude variations
components of the received pulse-modulated di'
>rection-flnder signal, which is applied by' way of
cathode follower 90 to output terminal93‘ïof the
`
`
which are determined by the variationsof the 40 receiver for utilization. '
' Referring now to the curveslof Fig. 4, the oper
applied signal but which are unidirectional with
ation of the receiver will be considered for the
respect to a reference amplitude level correspond
condition in which the pulse-modulatedfldirec
ing to, but not necessarily identical with, the
tion-under signal of curve a" is received concur
reference level of the applied signal.
_
Before discussing the operation of the described 45 rently with the interfering wave signal of curve
f" having a high intensity with reference to, and
Fig. 1 arrangement, reference is made to `the
a different carrier frequency than, the pulse
characteristic curves of Fig. 2 which illustrate the
modulated signal. For this condition, the output ,
variations in plate current is2 of second repeater -
of detector I5, represented by curve b",
device 16B with variations in signal voltage er;1 50 signal
comprises a heterodyne-component pulse-modu
applied to the control electrode of ilrst repeater ' lated signal having modulation components cor
device 16A The curves take into consideration
the. fact that the same signal variations that are
responding to the desired components of the re-.
ceived pulse-modulated signal and having a fre
applied to section 16A, but of less than half the
equal to the'difference between Athe car- _
signal intensity, are simultaneously applied to 55 quency
rier frequencies of both received `signals. Amore l
the control electrode of device 16B. It will be
complete discussion of thesignal produced in the
seen that the characteristic shown in full-line
circuit of detector I5 _for the assumed operating
curve k is unsymmetrical with reference to the
conditions is included in the above-mentioned
ordinate axis 0-ip2. In view of the described ad
copending application. Due to th'e capacitive
justments of unit 15, a discrimination results in 60 coupling between the stages following detector
favor of positive-polarity amplitude variations of v I5, this signal is applied to limiter 65 as a'pure
the applied signal, as will appear more clearly in
valternating current signal and there its positive
the ensuing discussion of the operation of the
and negative amplitude variations are limited at
the limiting levels indicated by the horizontal
In considering the operation of the receiver a1’ 65 lines c’ and c, respectively, of Fig. 4. The re
rangement as a whole, reference is made to the
sulting signal output of the limiter is represented
series of graphs of Fig. 3, indicating the receiver
by full-line curve d”. This signal is applied to
-response for the condition in which a. pulse-mod
rectiñer 15 and will be seento have bidirectional
ulated direction-finder wave signal alone is in
amplitude variations from a reference amplitude
tercepted by antenna system Ill, I I. Curve a rep 70 level e1" corresponding to the >`alternating current
resents one pulse of the received signal. This
axis of the heterodyne-component pulse-modu
signal, after translation in units lì-Iß, inclusive,
lated signal.
Y
is applied to detector. I5 where the desired mod
The negative-polarity amplitude _variations -of
ulation components thereof are derived. The
the limited heterodyneè'component signal are ap
output signal of the detector, curve b, after am
5_plied
with a -given phase and full intensity to
pliñcation in ampliiier 5B is limited in unit et at
receiver.
-
'
-ñrst repeater device ~'16A-and .are applied with
nal appear in the output circuit of repeater 16B
the same phase but with less than half intensity-
‘ with positive polarity.
to second repeater device 16B. Such negative
polarity amplitudegvariations 'of the applied sig
.
During such operating intervals when repeater
device 16B functions as a cathode-driven ampli
fier, repeater 16A is also in a conductive state,
nal are translated only by. repeater device' 16B, '
appearing in the output circuit of rectifier 15
serving as the driver stage for repeater 18B. Con
with positive polarity in the manner already de- _ sequently, the-impedance in the cathode circuit
of repeater 16B is less than for the condition
The `positive-polarity` amplitude variations o_f
when repeater 16A is nonconductive, as during
~the ' limited heterodyne-component signal are 10 the translation of applied signal variations of
'applied with the same relative phase and inten
negativev polarity. _ Therefore, thereisv less de- sity to repeaters 15A and 16B as the negative-'poe
generation in the circuit ‘of repeater 18B‘during
larity amplitude variations. The translation ‘of
the translation of signal variations of'> positive
scribed.
_
'
.
'
‘
~
'
such- positive amplitude variations of the applied - - `polarity than otherwise and consequently the
signal maybe most readily understood from the
following lconsideration of thevloading eiîect pro
' duced by repeater 16B‘on the operation of re
peater 16A.
l
positive-polarity amplitude variationsV of. the
»limited heterodyne-component signal are trans
lated With higher gain than corresponding am
plitude variations'of negative polarity.
Consider, first, a condition in'which no signal
Thus the output signal of the rectiiler -15 in
is applied to' the input circuit of repeater 16B 20 response to the limited signal of curve d" has
while a positive signal variation is applied to the
the wave form of curve h'.’. This signal will be
input circuit _cf repeater 16A. Under such con
seen to have amplitude variations determined by,
ditions, repeater 16B effectively comprises a load
and having a-predetermined ratio to, the posi
on the cathode circuit of repeater 16A so that a
tive-polarity amplitude variations of the hetero
signal variation of positive polarity and of ap 26 dyne-component signal of curve d" as well as
proximatelyone-ßhalf the magnitude of the ap
amplitude variations determined by, but having
plied` signalV is established across the common
a lesser ratio to, the negative-polarity amplitude
cathode impedance 18, 19. If the same positive
variations of the heterodyne-component signal.
signal variation is simultaneously applied to the
-Also, the amplitude variations of the'- resulting
input circuits of both repeaters 16A and 16B, the 30 output signal of curve h" are unidirectional with
repeaters- operate in parallel and establish a sig
respect to a reference amplitude level e2", cor
nal variation ofi positive polarity across their
responding to the reference level e1” or alternat
common cathode impedance 18, 19 which is sub
ing current axis of the applied heterodyne-com-stantially equal to that of the applied signal vari
ponent signal. This output signal comprises -the
~ ation. _For the intermediate condition in which 35 desired modulation components of the received
a positive signal variation of a given intensity is
applied to the input circuit of repeater 16A while
pulse-modulated direction-finder signal and is
translated through cathode follower 90 to output
a positive signal variation of less than half the "
terminal 93 of 'the receiver.
`
aforementioned given intensity is appled to the :
In discussing the operation of unit 15 mention
input circuit of repeater 16B, the latter contrib 40 has been made of the “reference amplitude level"
utes auloa 'ng effect on the cathode of repeater
16A which> 's' ,intermediate the iirst two described
conditionsj` In' particular, the loading eñîect for
this intermediate condition is such that a signal
variation of positive polarity is established across
cathode impedance 18, _19 of a value between orv1e-«ì
half» and the full intensity of the signal variation’
ilplllied to repeater 16A.
of the derived output signal, this level being de
scribed as "corresponding to the reference ampli~
tude level of the applied signal.” The ñrst quoted
expression is intended to mean that amplitude
level of the output signal which corresponds to
the reference amplitude level of the input signal
after the signal has been translated through stage
'
5
It will be evident that the operation of recti-l
~It will be evident from a comparison of curves
iier 15 in yresponse to the positive-polarity am 50 d" and hl" of Fig.. 4 _that unit 15 effectivelygcom-i
plitude variations of the limited heterodyne-com-4
prises a full-wave rectifier. In one embodiment
ponent signal corresponds to the above-'described
of the invention found to have practical utility,
intermediate loading conditions. That is to say,
the circuit components of the rectifying system
in response to such amplitude variations, a signal
were as follows:
>
' .
variation of positive polarity having a value be 55
Tube 16 ________ __-.-___. Type GSL'ZGT
tween oneëhalf and full intensity is established
Tube 11 ___________ ___.-. One section of a type
across cathode impedance 18, 18. This signal
»
'
6H6 duo-diode
variation tends to causerepeater device 16B to
Resistors 18 and 19 ____ _. 1200 ohms
function as a cathode-driven ampliiier. However,
the lsame signal variation but of less than half 60 Resistor 83 ___________ _. 22,000 ohms
intensity which is applied through condenser 8|
Resistors 95 and 96 ____ _. 220,000 ohms
Resistor 91 _______ __'___- 4.7 megohmsv
directly tothe Ycontrol electrode of repeater 16B
tends tov cause this repeater to function as a
« normal grid-driven amplifier. Since the driving
Condensers 80 and 8 i -__ 1,000 micromicrofarads
Condenser 94 _________ _. 0.01Wmicroi`arad
voltage in the cathode circuit is the greater, the 65
The rectiñer arrangement may be adjusted, if ‘
overall eñ‘ect _is that repeater 16B functions, for
desired, so that amplitude variations of positive
the translation of positive amplitude variations
and negative polarity of an applied signal are
of the limited signal, as a cathode-driven am
translated with the same degree of ampliflcation
pliñer. 'I‘he effective driving voltage is of posi
of with the described discrimination in
tive polarity and has an intensity less than half 70 instead
favor of positive-amplitude signal variations.
the intensity of the signal variation as applied
This alternate operating condition may be real-_
tothe input circuit of repeater 16A. In accord
ized through an appropriate adjustment: of the
ance .with the conventional operation of a cath
tap onvresistor 12 to increase the level of _the
ode-driven’amplifier, the positive amplitude vari
signals applied to repeater 15B. Whensuch an
ations of the limited heterodyne-component sig 75 adjustment has `been madethe overall signal-.
@410,785
translating characteristic‘of unit 15'may be rep
resented by curve Ic' of Fig. 2. Curve k’ is sym
' metrical with respect to the ordinate axis 0-ip2.
Additionally, further adjustment offthe tap on
resistor l2 may result in a discrimination in favor
of amplitude variations of negative polarity.
In any case, the relative magnitudes of the
tially less than said given intensity to said input
circuit of said second device, and means coupled
to said output circuit of said second device for
deriving an output signal from said system hav
ing amplitude variations which are determined.
by said variations of said applied signal'but which
are unidirectional with respect to a reference
plate resistance rp of repeater '16B and its anode
amplitude level corresponding to said reference
resistor 83 have a pronounced eiiect on the re
level of said applied signal.
,
sponse of the rectifier system to applied signal 10
2. A signal-translating system for translating
variations of positive and negative polarity. This
a signal which may include bidirectional ampli
may best be illustrated by means of an example.
tude variations with respect to a reference ampli
Assume that it is desired to have equal'gain for
ltude levell comprising, a first repeater device re
applied signal variations of positive and negative
sponsive to amplitude variations of said signal
polarity. If the anode load resistor 83 is very 15 in a given direction from said reference level and
large in comparison with the anode resistance
substantially unresponsive to amplitude variations
of the repeater, the desired translating charac
of said signal in the opposite direction from said
teristic is obtained when the signal is applied to
reference level, a second repeater device respon
repeater 76B With approximately one-half the
sive to bidirectional -amplitude variations of said
intensity of the signal as applied to repeater 76A. 20 signal from said reference level, input and output
On the other hand, where the anode resistor is
circuits for said devices includingan impedance
much less than the anode resistance of the tube
common to the output circuit of said first device
the ratio of the signal voltages applied to the
and to the input circuit of _said second device so
repeater is adjusted to approach that signal variations in said first devicev tend toA
25 effect opposing signal variations in said second
_1
24a
.
While in the described embodiment of the in
vention the first repeater 16A is operated at anode y
device, means for applying said signal with a given
phase and intensity to said input'circuit of said ~
ilrst device, means for applying said signal with
' the same phase but with substantially less than
current cutoiï, it will be understood that this re-` l 30 Asaid given intensity to` said-input circuit of said
peater may, if desired,~ be operated at a condition
of anode current saturation. In such case, the
first repeater is responsive» substantially only to
applied amplitude variationsof negative polarity
and the general operation of rectiñer 'l5 is sub
' stantially as described. However, the amplitude
second device, and means coupled to said output
circuit of said second device for deriving an out
put -signal from said system having amplitude » '
variations which are determined by said varia
35 tions of said applied signal but which are unidirec
variations of the derived output signal ywill be of
tional With respect to a reference amplitude level
corresponding to said reference level of said ap
negative polarity.
plied signal..
'
.
»
>
'
y
The signal-translating system of the present
3. A signal-translating system for translating
invention will be seen to have the advantage 40 a signal which may-include bidirectional ampli
over prior art arrangements that its _driver stage
tude variations with respect to a reference ain-_
65 has ¿normal gain. This results from the'fact
plitude level comprising, a ñrst repeater devicel
that a balanced output signal is not required for
responsive to amplitude variations of said signalthe purpose of driving signal-translating system
in a given direction from said reference level and
15.
`
.45 substantially less‘ responsive to amplitude varia
While there have been described 'what are at
tions of said signal inthe opposite direction from 'Y
present considered to be the preferred embodi
said reference level, a second> repeater device
ments of this invention, it Will be obvious to those
responsive to bidirectional amplitude variations `
skilled in the art that various changes and modi
of said signal from said reference level, input
flcations may be made therein Without departing 50 and output circuits for said devices including an
impedance common to the output circuit of said
from the invention, and it is, therefore, aimed in
the appended claims to cover all such changes and
first device and to the input circuit of said sec
modifications as fall within the true spirit and
ond device so that signal variations inA said first
scope of the invention.
, e
device tend to elïect opposing signal variations
What is claimed is:
55 in said second device, means for applying said
signal withI a given phase and intensity to said
1. A signal-translating system for translating
input circuit of said first device, means for ap
a> signal which may include bidirectional ampli
plying said signal with the same phase but with
. tude variations with respect to a reference ampli
approximately half of said given intensity to said
tude level comprising, a first repeater device re
sponsive to amplitude variations of said signal 60. input circuit of said- second device, and means
.coupled to said output circuit of said second de
in a given direction from said reference :level
vice for deriving an output signal from- said sys
and substantially less responsive to amplitude
tem having amplitude variations which are de
variations of said signal in the opposite direction
termined by and proportional `|to said variations
from said reference level, a second repeater device
responsive to bidirectional amplitude variations 65 of said applied signal but which are unidirec#
tional with respect to a reference amplitude level
of said signal from said reference level, input and
corresponding to said reference level of said ap
output circuits for said devices including an im-‘
plied signal.
`
’
pedance common to the output circuit of said first
4. A signal-translating system for translating
device and to the input circuit of- said second
device so that signal variations in said ñrst device 70 a signal which may include bidirectional ampli
tend to eiîect opposing signal variations in said
tude variations with respect to a reference ampli
second device, means for applying s'aid signal
Etude level comprising, a ñrst repeater device re
.with a given phase and intensity to said input
sponsive to amplitude variations of said signal
circuit oi said iirst device, means for applying
in a given direction from said reference level and
said signal with the same phase but with substan 75 substantially'less responsive to amplitude varia
2,410,735
tions of said signal inthe opposite direction from
input circuit of said vfirst device, means for apply
said reference level, a second` repeater device
responsive to bidirectional amplitude variations
of said signal from said reference level, input and
stantially_less than said given intensity to said
-input circuit of said second device, and means
ing said signal with the same phase »but with sub- '
cpupled to said output circuit of said second de
vice for deriving an output signal from said sys
pedance common to the output circuit of said
tem having amplitude variations which are de
first device and to the input circuit of said sec
»
termined by said variations of said applied sig
ond device’so that signal variations 'in said ilrst
nal but which are unidirectional with respect to
device tend to eiïect opposing signal variations
in said second device, means for applying said l0 a reference amplitude level corresponding to said
reference- level of said applied signal.
signal with a given phase and intensity to said
'7.k A signal-translating system for translating
»input circuit of said first device, means for ap
a signal which may include `bidirectional ampli
plying said signal with the same phase but with
tude variations with respect to a reference ampli
lessithan half of said given intensity to said in
tude level comprising, a pair of repeater devices,
put circuit of said second device, and means cou
input and output circuits for said devices includ
pled to said output circuit of said second device
output circuits for said devices including an im
for deriving an output signal from said system _
having amplitude variationsv determined by and
‘
mg an impedance common to the output circuit
o! the first of Vsaid devices and tc the input circuit
of the second of said devices so that signal varia
having a predetermined ratio to said variations
in said given direction of said applied signal and 20 tionsl in said first device tend to effect opposing ’
signal variations ir said second device, means_for
having amplitude variations determined by and
applying said signal with a given phase and in
having a lesser ratio to said variations in said
tensity‘ to saidinput circuit of said ñrst device,
opposite direction of said applied signal, said am
plitudev variations of said outputI signal being
unidirectional with respect to a reference ampli
tude level corresponding to said reference level
of said applied signal.
_
_
A
'
5. A signal-translating system for translating
a signal which may include bidirectional ampli->
Ameans for applying said signal with the same
phasebut with substantially less than said given
intensity'` to said input circuit of said second de
« vice, means for controlling said first device to be
Y responsive to amplitude variations of said signal
.in a given direction from said reference level and
to'be substantially- less responsive to amplitude
tilde variations with respect .to a reference am
plitude level comprising, -a first repeater device
responsive to amplitude variations of said signal
in a given direction from said reference level and `
substantially- less responsive to amplitude varia
variations of said signal in the opposite direction
from said _reference level, means for controlling
. said second device to be responsive to bidirectional
‘ amplitude variations of said signal from said ref
tions of said signal in the opposite direction from 35 erence level, and means coupled to said'v output
I circuit of said second device for deriving an out
said reference level, a second repeater device re
putsignal from said system having amplitude var
sponsive to bidirectional amplitude variations of
ìations'which are determined by said variations of
said signal from said reference level, input and
4said. applied signal but which are unidirectionaloutput circuits for said devices including an im
with respect to- .a reference amplitude level cor
pedance common to the input -and output cir 40 responding 'to said reference level of said applied
cuits of each. of saiddevices so that signal varia
tions in said iirst-device tend to effect opposing »
8. A signal-translating system for translating a
signal variations in said second device, means
signal _which may include bidirectional amplitude
for applying said signal with a given phase and
variations with respect to a reference amplitude
intensity to said input'circult of said ñrst device,
level comprising, a pair of electron-discharge re-means for applying said signatwith the same
peater devices, input and output circuits for said
phase-but withv substantially less than said given
signal.
signal.
'
Y
-
`
‘
~
devices including an impedance common to the
intensity to said >input circuit of said second
device, and means coupled to said output circuit
of said second device for deriving an-output sig
nal from said system having amplitude varia
tions whiclr are determined by said variations of
said applied signal but which are unidirectional
with respect to a reference amplitude level cor
responding to said reference level oi said applied
`
outputcircuit of the ñrst4 of said devices and to
the input circuit of the second devices so that
’ signal variations in said first device tend to eiieet
opposing signal variations in said second device,
means for applying said signal with a given phase
and intensity to said input circuit of said ñrst de
vice, means for applying said signal with the same
phase but with substantially-less than said given
55
_
intensity to said input circuit of said second de
6. A signal-.translating system for translating
a signal which may include bidirectional ampli
vice, means for biasing said ñrst device to be re
sponsive to amplitude variations of said signal in
',tude variations with respect to a reference am
plitude level comprising, a iirst electron-dis
a given direction from said reference level and to
so be
substantially less responsive to amplitude var
charge repeater device responsive to amplitude
iations of said signal inI the opposite direction from
variations of said signal in a given direction from
said reference level and‘substantially less respon
sive to amplitude variations of said signal in the
opposite direction from said reference level, a
second electron-discharge repeater _device re
sponsive to bidirectional amplitude variations of
said signal from said reference level, input and
said reference level, means for biasing said sec
65
ond device to be responsive to bidirectional ampli
tude variations of said signal from said _reference
, level, and means coupled to saidoutput circuit of
- said second device lor deriving an output signal
from said system having amplitude `variations
which are determined by said variations of said
output Vcircuits for said devices including an im
pedance common to the output circuit of said 70 applied signal but which are unidirectional With
respect to a reference amplitude level correspond
ñrst device and to they inputcircuit of said sec
ing to said reference level of said applied signal.
ond »device so thatsignal variations in said iirst
9.' A signal-translating system for translating a
device tend to effect opposing signal variations
in said second device, means for applying said
signal which may include bidirectional amplitude
signal with a given phase and intensity to said` 75 'variations with ‘respect to a reference amplitude
2,410,735 _
1
.
level comprising, a pair of electron-discharge re
peater devices, input and output circuits for said
14
said signal in the opposite direction from said
reference’level, means for controlling said sec
ond device to be responsive to bidirectional am
devices including an impedance common to the
_ output circuit of the first oi' said devices and to the
plitude variations lof said signal from said refer
input circuit of the second of said devices so that
ence level, and means coupled to said output cir
signal variations in said iirst device tend to eiiect
cuit
of said second device for deriving an output
opposing signal variations in said second device,
signal
from s_aid’system having amplitude varia
means for applying said signal with a given phase
tions which are determined by said variations of
and intensity to said input circuit of said first de
applied signal but which are unidirectional
vice, means for applying said signal with the same 10 said
with
respect to aV reference amplitude level cor
phase but with substantially less than said given
responding to said reference level of said applied
intensity to said input circuit of said second de
vice, stabilizing means responsive to said signal for
11. A signal-translating system for translating
biasing said ilrst device to be responsive to ampli
a signal which may> include bidirectional ampli
tude variations of said signal in a given direction
tude variations with respect to a reference ampli
from said reference level and to be substantially
tude -level comprising, a Pair of electron-dis
less responsive to amplitude variations of said sig
signal.
»
,
'
_
v
charge repeater devices individually having
anode, cathode and control electrodes, input and
outputcircuits for said devices coupled to said
~ nal in the opposite direction from said reference
level, means for biasing -said second device to be
responsive to bidirectional amplitude variations of
said signal from said reference level, and means
20 electrodes thereof and including a cathode re
coupled to said output circuit of said second de
vice for deriving an output signal from said system
having amplitude variations which are determined`
by said variations of said applied signal but which
are unidirectional with respect to a reference am
plitude level corresponding to said reference level '
of said applied signal.
10. A signal-translating system for translat
sistor common to the input and output circuits
of- each of said devices so that signal variations
in the-iirst of said devices tend to effect opposing
signal variations in the s_econd of said devices,
means i'or applying said signal with a, given phase
and intensity to said input circuit of said iirst
device, means for applying said signal with the
same phase, but with substantially less than said
given intensity to said input circuit 9i said sec
ing a signal which may include bidirectional am 30
ond'device, means for applying a bias potential ~
plitude variations with respect to a reference am
between said cathode and control electrodes of
plitude level comprising, a pair of _electron-dis
charge repeater devices individually having -= said iirst device such that said iirst device is op
substantially at anode current cutoff to
anode, cathode and control electrodes. input and « «erated
output circuits for said- devices coupled to said 35 be responsive substantially only to amplitude var
iations of said signal in a given direction from
electrodes thereof and including a cathode imped
said rei’erence'level,v means for applying a bias
ance common to the output circuit of the iirst of
said devices and to the input circuit of the second _ potential between said cathodegand control elec
trodes of said second device such that said second
of said devices so that signal variations in said
ñrst device tend to eiïect opposing signal varia 40 device is operated substantially -above anode cur
rent cutoii’ to be responsive to bidirectiional am
tions in said second device, means for applying'
plitude variations of said signal from said refer
said signal with a, given phase and intensity to said
input circuit of said ñrst device, means for apply- _
ence level, and means coupled to said anode elec
trode of said second device for deriving an output
ing said signal with the same phase but with sub
stantially less than said given intensity to said 45 signal fromsaid system having amplitude varia
tions which are determined by said variations of
input circuit of said second device, means for con
said applied signal but which are unidirectional
trolling said iirst device to be responsive to am
with respect to a reference amplitude level cor
- plitude variations of said signal in a given direc
responding to said reference level oi said applied
tion from said reference level and to be substan
tially less responsive to amplitude variations of
signal.
50
’
DAVID B. HOISINGTON.
Документ
Категория
Без категории
Просмотров
0
Размер файла
1 308 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа